[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f-mRRYrgFZDDGpBVUne4YVy1pMmOygWD6K5SBj3PfwGQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":35},[],"2025-06-13 08:50:06",199648305,[8,9,10,11],"Mechanical efficiency","Wheel efficiency","Relative internal efficiency","Stage efficiency",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"7e526e88721350d524673b9122f7e7a0","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9e8c86296669bc6d2e41d6b126109e04.jpg","汽轮机设备及系统（AISEC）","exam_150917737","Chapter 1-3 test 2","The efficiency of a turbine include",[21,32,36,45,54,64,73,82,91,100],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],199648303,[25,26,27,28],"nozzle","nozzle and blade","moving blade","cylinder","The conversion of steam heat to kinetic energy in impulse stage is in the ()","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":35},[],[8,9,10,11],1,{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":30,"type":35},[],199648307,[40,41,42,43],"The steam humidity increases at the last stage","The stress of governing stage blades is danger at the full load","Governing stage is safety at any time","The working conditions deteriorate at the last stage","If there is greater variation of initial pressure, the impact of safety is",{"answer":46,"createTime":5,"id":47,"options":48,"question":53,"source":30,"type":35},[],199648309,[49,50,51,52],"Increase in governing stage","Decrease in final stage","Decrease in governing stage","Increase in final stage","When the steam flow rate decrease for condensing turbine, the pressure ratio",{"answer":55,"createTime":56,"id":57,"options":58,"question":63,"source":30,"type":35},[],"2025-06-13 08:50:07",199648311,[59,60,61,62],"The steam flux is showed","There is a ideal line about stage","The process parameter in moving blade is showed","The ideal enthalpy drop of nozzle can be known","Which description about the thermal process line is true",{"answer":65,"createTime":56,"id":66,"options":67,"question":72,"source":30,"type":35},[],199648313,[68,69,70,71],"above 280 MW, constant pressure","below 80 MW, sliding pressure","below 80 MW, constant pressure","above 280 MW, sliding pressure","The method of compound sliding pressure governing in 300MW turbine is",{"answer":74,"createTime":56,"id":75,"options":76,"question":81,"source":30,"type":35},[],199648315,[77,78,79,80],"Wheel balance hole","Axial thrust bearing","Balancing piston","Reverse arrangement","The balancing methods of axial thrust are",{"answer":83,"createTime":56,"id":84,"options":85,"question":90,"source":30,"type":35},[],199648317,[86,87,88,89],"leaving-velocity loss is minimal","The wheel efficiency is maximal","The wheel efficiency is minimal","Leaving-velocity is minimal","The optimum speed ratio's physical meaning is",{"answer":92,"createTime":56,"id":93,"options":94,"question":99,"source":30,"type":35},[],199648319,[95,96,97,98],"Multiple blades arranged sequentially can form groups","The steam velocity through the stage group is the same","Multiple blades can form a group","The steam flow through the stage group is the same","For the stage group, the correct is",{"answer":101,"createTime":56,"id":102,"options":103,"question":108,"source":30,"type":35},[],199648321,[104,105,106,107],"peripheral velocity(u)","absolute velocity(C1)","relative velocity(w1)","absolute velocity(C0)","Steam flow velocity triangle consist of"]